Targus NW05WM Noteworthy Wireless Optical Mini Mouse with Charger Wireless Mouse Function Up to 3 Feet From Your Notebook or Desktop Computer - Includes a Charging Cradle Small, Lightweight Ergonomic Design Designed for People On The Go  Smaller and Lighter Than Most Mice Optical Sensor (For Surface and Space Freedom) and Digital Signal Processor to Read and Follow Your Mouse Moves, Eliminating Erratic Cursor Movement and The Need to Clean Your Mouse Pad Instant Plug & Play No Special Drivers Needed or Included